EP2784334A1 - Befestigungselement und System zum Verbinden von Isoliertafeln - Google Patents

Befestigungselement und System zum Verbinden von Isoliertafeln Download PDF

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Publication number
EP2784334A1
EP2784334A1 EP13160800.2A EP13160800A EP2784334A1 EP 2784334 A1 EP2784334 A1 EP 2784334A1 EP 13160800 A EP13160800 A EP 13160800A EP 2784334 A1 EP2784334 A1 EP 2784334A1
Authority
EP
European Patent Office
Prior art keywords
fastening member
insulation panels
longitudinal axis
sheet material
insulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13160800.2A
Other languages
English (en)
French (fr)
Inventor
Poul Høg Andersen
Kurt Munk Pedersen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rockwool AS
Original Assignee
Rockwool International AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rockwool International AS filed Critical Rockwool International AS
Priority to EP13160800.2A priority Critical patent/EP2784334A1/de
Publication of EP2784334A1 publication Critical patent/EP2784334A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0254—Ducting arrangements characterised by their mounting means, e.g. supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B15/00—Nails; Staples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0263—Insulation for air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
    • F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
    • F16B5/0614—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in angled relationship

Definitions

  • the present invention relates to a fastening member for joining two insulation panels by manually inserting the fastening member into the insulation panels, said fastening member having an insertion end and a head end.
  • insulating boards are mounted e.g. around ventilation ducts or profiles, such as load-bearing profiles. This often requires the use of glue or other fastening means for fastening the insulating panels to each other and to the surface of the building structure.
  • Ventilation ducts and the like are insulated against fire so that the insulating layer can withstand fire for a certain time and thereby keep the temperature of profiles of steel under the point of softening or prevent heat from inside a ventilation duct to spread to the outside of the duct.
  • the critical areas are where the insulating panels meet and it is necessary to fasten the insulating panels to each other around the duct or profile to provide safe fire insulation around the ducts or profiles.
  • SE-C2-507549 discloses a fastening element and a method of fastening such insulating panels to each other.
  • This fastening element is in the form of a helix-shaped screw composed of a helix-formed head and a helix-formed wire.
  • the helix-shaped screw is screwed into the insulating materials to be joined together.
  • the joint provided by use of this helix-shaped screw is generally acceptable.
  • helix-shaped screws are needed in large quantities when mounting the insulating panels in a building structure and normally the screws are supplied in a large quantity in a box or a bag, and due to the shape of the helix-shaped screws they get tangled into each other and are difficult to separate and thereby single out one at the time when the screws are to be mounted. Furthermore, the shape of the helix-shaped screw also makes it difficult and time-consuming to mount. Particularly, it is found disadvantageous that several turns of the helix screw must be applied in order to ensure the two boards are well secured to each other and a sufficient pull-out resistance is ensured. An electrically driven hand-held tool is normally used for mounting of the helix-shaped screws.
  • a fastening member for joining two insulation panels by manually inserting the fastening member into the insulation panels, said fastening member having an insertion end and a head end, wherein the fastening member is made of an elongated strip of sheet material having a longitudinal axis and which is twisted around its longitudinal axis.
  • the fastening member is made of sheet material it can easily be screwed into the insulation boards by manually forcing the fastening member by hand into the insulation, and the flat shape of the sheet material and the twist ensures that the fastening member has a high pull-out resistance.
  • the fastening member is provided with a bended protion, the bended portion preferably being bended approx. 90o in relation to the longitudinal axis.
  • This flat, bended portion at the head end functions as a push and turn handle during the insertion of the fastening member. After the mounting or insertion, the bended portion is visible on the outside of the insulation board so it can be clearly seen that the fastening member is indeed mounted.
  • the sheet material is twisted between 90o and 360o, preferably 180o, i.e. half a turn, around the longitudinal axis.
  • This twist is advantageously found sufficient in order to establish the required pull out resistance whilst at the same time also ensures an easy manual insertion as the fastening member does not rotate too much when being manually pressed into the mineral wool insulation.
  • the insertion end of the fastening member is pointed. This may facilitate a more accurate point of insertion of the fastening member. However, it is by the invention realised that a plain blunt insertion end may also be used.
  • the sheet material has a thickness of 0.6-1.2 mm, preferably approx. 0.7-0.8 mm.
  • a conventional plate material such as steel, can be used. This ensures that the fastening member is inexpensive to produce. Due to the small thickness of the fastening member only a relatively small force is required to press the fastening member into the insulating material. Thus, only low forces are exerted on the fastening member, and there is no requirement that the sheet material needs to be hardened or reinforced in other ways.
  • the fastening member may have a length which corresponds to approximately twice the thickness of the insulation panels which it is intended to interconnect. Generally, it has been found that the width to length ration of the strip of sheet material from which the fastening member is formed may be between 1:4 and 1:8, preferably approx. 1:6.
  • a system of insulation panels mounted around a building structure such as a ventilation duct or the like, wherein at least two insulation panels adjacent each other are joined by at least one fastening member by manually inserting the at least one fastening member into the insulation panels, said fastening member having an insertion end and a head end, wherein the fastening member is made of an elongated strip of sheet material having a longitudinal axis and which is twisted around its longitudinal axis.
  • the insulation panels are made of mineral wool fibres, and preferably with a density of 30-250 kg/m 3 , more preferably with a density of 50-200 kg/m 3 , most preferably 70-180 kg/m 3 .
  • the fastening member has a length which corresponds to approximately twice the thickness of the insulation panels.
  • the length of the fastening member should be approx. 120 mm.
  • the strip of sheet material could have a width of 10-30 mm, such as 20 mm. It has been found that good fire protection is achievable with the thickness of the insulation panels being 40-100 mm, preferably 60-80 mm. Therefore, the length of the fastening member is often 80-200 mm preferably 120-160 mm.
  • a fastening member 1 is made from an elongated strip of metal 1' (see fig. 3 ) which has an insertion end 2 and a head end 3 and which is twisted about half a turn between said ends 2, 3 around a longitudinal axis 4.
  • the twisting angle is preferably identical over the full length L of the fastening member, even though it might vary slightly.
  • the insertion end 2 is preferably formed as a pointed end 2 as shown in the figures.
  • a bended portion 5 is formed at the head end 3 by bending the end of the elongated strip 1' around the folding line 5' (see fig. 3 ) to a substantially perpendicular position relative to the longitudinal axis 4 and the rest of the strip 1'.
  • the fastening member 1 is found particularly advantageous in relation to corner connections between fire protection mineral wool insulation boards or panels 7, such as shown in fig. 2 .
  • One of the issues with the connection between the fire protection boards 7 at the corners of a ventilation duct 6 is to ensure that no gaps appear due to for instance inaccurate cutting of the boards and/or to prevent gaps to appear due to heat expansion of the steel duct 6 which the fire protection boards 7 are arranged around.
  • the fire protection insulation boards 7 may be fitted to the surface of the duct 6 by heat-resistant glue and/or welding pins 8.
  • fastening members 1 according to the invention are provided in order to secure the corner assembly of the insulation boards 7.
  • the elongated strip is preferably cut out of a steel plate, e.g. a 0.7-0.8 mm steel plate.
  • the preferred thickness T can vary depending on the choice of material between 0.6-1.2 mm.
  • a preferred choice of material is steel since it is well suited to fire protection systems and is readily available and reasonably priced. However, other materials may be used under the circumstances, such as plastic or the like depending on how thermo-resistant the fastening members need to be.
  • the width W of the fastening member 1 may be chosen to fit a specific use.
  • a width W between 10 and 30 mm, such as 20 mm has shown to be suitable. With this dimension it is relatively easy to push the fastening member 1 into the insulation boards 7 by hand.
  • the twist is about half a turn or 180o around the longitudinal axis 4.
  • the amount of twist can be more or less than this as long as it is sufficient to establish a good pull-out resistance in a given application.
  • the twist is preferably constant over the full length L, even though he twisting angle by increase from one end of the fastening member to the other end.
  • the bended portion 5 at the head end 3 of the fastening member 1 functions as a push and turn handle during the mounting which can be done manually without use of a tool. After mounting the flat bended portion 5 is visible on the outside of the fire protection mineral wool fibre boards 7 so that it can be visibly controlled that the fastening member 1 has been mounted.
  • the fastening member 1 is made of a thin, flat piece of sheet metal.
  • This strip of sheet metal is elongated with a width-to-length ratio of between 1:4 and 1:8, more preferably 1:6. It has turned out that this ensures a sufficient pull-out resistance with a twist of less than a full turn, preferably only half a turn.
  • the relative wide blade-like twist of a thin, flat strip of sheet material unlike e.g. a screw with a tread of several revolutions, ensures this fastening member 1 its pull-out resistance whilst at the same time ensures that it is easy to mount in the insulation boards, and is therefore particularly useful in the application of interconnecting mineral insulation boards, such as described above.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Building Environments (AREA)
EP13160800.2A 2013-03-25 2013-03-25 Befestigungselement und System zum Verbinden von Isoliertafeln Withdrawn EP2784334A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13160800.2A EP2784334A1 (de) 2013-03-25 2013-03-25 Befestigungselement und System zum Verbinden von Isoliertafeln

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13160800.2A EP2784334A1 (de) 2013-03-25 2013-03-25 Befestigungselement und System zum Verbinden von Isoliertafeln

Publications (1)

Publication Number Publication Date
EP2784334A1 true EP2784334A1 (de) 2014-10-01

Family

ID=47997115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13160800.2A Withdrawn EP2784334A1 (de) 2013-03-25 2013-03-25 Befestigungselement und System zum Verbinden von Isoliertafeln

Country Status (1)

Country Link
EP (1) EP2784334A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB192492A (en) * 1921-11-03 1923-02-05 Frank Humphris Improvements in and relating to nails, staples, spikes, hooks, brads, brobs or the like
US2215205A (en) * 1939-07-11 1940-09-17 Pacific State Box And Basket C Fastening device
FR2118660A5 (de) * 1970-12-15 1972-07-28 Mustad Et Son As
FR2656893A1 (fr) * 1990-01-10 1991-07-12 Laurent Gerard Piquet d'ancrage de tente.
US6279287B1 (en) * 1998-08-12 2001-08-28 Shoshone Station Llc Prefabricated building panel and method of manufacturing same
US20030180121A1 (en) * 2000-11-28 2003-09-25 Evening Star International, Llc Metal piercing fastener with optimally resilient securing member
WO2005036070A1 (de) * 2003-10-06 2005-04-21 Saint-Gobain Isover KLIMA- bzw. LÜFTUNGSKANAL

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB192492A (en) * 1921-11-03 1923-02-05 Frank Humphris Improvements in and relating to nails, staples, spikes, hooks, brads, brobs or the like
US2215205A (en) * 1939-07-11 1940-09-17 Pacific State Box And Basket C Fastening device
FR2118660A5 (de) * 1970-12-15 1972-07-28 Mustad Et Son As
FR2656893A1 (fr) * 1990-01-10 1991-07-12 Laurent Gerard Piquet d'ancrage de tente.
US6279287B1 (en) * 1998-08-12 2001-08-28 Shoshone Station Llc Prefabricated building panel and method of manufacturing same
US20030180121A1 (en) * 2000-11-28 2003-09-25 Evening Star International, Llc Metal piercing fastener with optimally resilient securing member
WO2005036070A1 (de) * 2003-10-06 2005-04-21 Saint-Gobain Isover KLIMA- bzw. LÜFTUNGSKANAL

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